EP0399674B1 - Jointing of fabric ends - Google Patents

Jointing of fabric ends Download PDF

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Publication number
EP0399674B1
EP0399674B1 EP90304689A EP90304689A EP0399674B1 EP 0399674 B1 EP0399674 B1 EP 0399674B1 EP 90304689 A EP90304689 A EP 90304689A EP 90304689 A EP90304689 A EP 90304689A EP 0399674 B1 EP0399674 B1 EP 0399674B1
Authority
EP
European Patent Office
Prior art keywords
fabric
matrix material
loops
yarn ends
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90304689A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0399674A2 (en
EP0399674A3 (en
Inventor
Ian Christison Sayers
Leonard Robert Lefkowitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Fabrics Heidenheim GmbH and Co KG
Original Assignee
Scapa Group Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scapa Group Ltd filed Critical Scapa Group Ltd
Publication of EP0399674A2 publication Critical patent/EP0399674A2/en
Publication of EP0399674A3 publication Critical patent/EP0399674A3/en
Application granted granted Critical
Publication of EP0399674B1 publication Critical patent/EP0399674B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0054—Seams thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/10—Wire-cloths
    • D21F1/12—Seams thereof

Definitions

  • the invention concerns the jointing of fabric ends, and has particular, though not exclusive, reference to the joining together of the opposed ends of a papermakers or like industrial fabric so as to bring the same into the form of an endles band.
  • seaming was effected by sewing or otherwise securing a tape carrying laterally extending loops to each of the respective fabric ends, the loops at the respective ends being interdigitated and a pintle wire being introduced into the tunnel formed by the interdigitated loops to hold the ends together.
  • Another well practised procedure is to "weave back" free warp ends into the body of the fabric and in so doing form loops from the individual warp yarns, the loop-forming warp yarns each being folded back into alignment with an adjacent cut-back warp yarn.
  • GB 623010 discloses a method of jointing two belt ends so as to effect a seam therebetween and thus form an endless belt.
  • the belt may comprise a fabric having upper and lower wear resistant rubber coatings.
  • the fabric comprises a single continuous warp yarn thus providing loops at the ends of the fabric.
  • the fabric ends may be jointed by interdigitating the loops at the respective fabric ends and passing a wire through the loops.
  • the object of the present invention is to provide a further method of forming loops or loop-like structures at a fabric end, whether of woven construction or otherwise for cooperation with a complementary formation at an opposed fabric end and to receive a pintle wire into engagement therewith.
  • the loop-forming material comprises the remote ends of the respective free yarn ends, said free yarn ends being folded back to define the aforesaid loops with the extremities of the said free yarn ends positioned for embedment in the matrix material.
  • the loop forming material comprises a pre-formed element having loops extending from an edge thereof, the body of the element being embedded in the matrix material.
  • the body of the element is apertured and the free yarn ends are threaded through successive ones of the said apertures in a direction corresponding to the longitudinal direction of the belt.
  • the method includes the further step of providing upstanding pins to the mould plate which extend through the matrix material thereon, the pins serving to form apertures in the said material.
  • the matrix material will ordinarily comprise a polyamide or polyester material provided in particulate or other form, it may be found convenient in some instances to utilise a radiation curable resin, permeability of the matrix being effected by selective polymerisation of the resin through a mask having transparent and opaque regions thereto, polymerisation occurring in register with the transparent regions and resin in positions in register with the opaque regions being removed subsequent to the polymerisation step to leave an aperture thereat.
  • a seam is formed at the end of a woven structure 11 by fringing out the warp yarns 12, cutting back, say, alternate warp yarns, laying the yarns in side-by-side disposition across and in engagement with a pinned plate 13, the intermediate "fringed-out" warp yarns being of a length to protrude beyond the plate 13 by an amount 16 sufficient to form the required loops 14, and, after folding about a pin 15 extending in the transverse direction of the plate and in closely spaced disposition outwardly of the free edge thereof, to provide for further substantial engagement with the plate.
  • Location of the monofilament yarns in spaced apart disposition relative to the floor of the mould plate, thereby to ensure that matrix material will exist below such yarns, may be effected by forming shoulders on the pins and on which the monofilament yarns are supported.
  • thermoplastics matrix material 17 for example in particulate form, is applied to the plate 13 in an amount sufficient to fill the same to the level of the side walls thereof, such material, on the application of heat, via suitable heater means shown below the mould plate in Fig. 4, and the subsequent cooling thereof, imparting a requisite degree of integrity in the resultant seam by encapsulation of the warp yarns 12 engaged with the plate 13 within the matrix material.
  • the pins 18 upstanding from the plate are of a length to extend to the upper edge of the side walls of the mould plate, and thus define through apertures 19 in the end region of the fabric which are consistent with the interstices in the body of the woven fabric, thereby to give a like permeability characteristic to such end region to that of the remainder of the fabric.
  • the warp yarns intermediate the loop forming yarns terminate short of the remote edge of the mould plate 13, as shown at 20, whilst the ends of the loop-forming yarns are folded back on themselves, the crimp inherent in the yarn being arranged so that portions thereof lying in superimposed disposition exist in nested relationship as shown in the drawings.
  • the height of the side walls of the mould plate, and thus the thickness of the matrix material will closely approximate to the fabric thickness, as is necessary in relation to papermachine clothing where avoidance of seam marking of the paper produced thereon is of paramount importance.
  • a cast is made of the fabric surface profile and pins are provided in such cast in register with the interstices in the fabric, the cast then being used in lieu of the mould plate, such a course providing a reproduction of the fabric profile in the region of the fabric end.
  • a proportion, say three out of four, of the warpwise extending yarns are cut back close to the leading edge of the mould plate, the remaining yarns extending across the mould plate and being utilised in the manner above set forth in forming loops.
  • the cut-back yarns extend across the mould, such ends may be shifted laterally to improve the security of their attachment to the matrix material.
  • the facility for controlling fabric permeability at the fabric end by variation in pin size and distribution is of importance, in that the inherent permeability of the body of the fabric can be reproduced by appropriate selection of these parameters.
  • Figs. 1 to 5 The method as illustrated by Figs. 1 to 5 is susceptible to ready modification for use in the context of a composite fabric of the kind disclosed in EP-A-0285376.
  • artificial crimp is introduced into the straight warp reinforcing yarns 21 extending outwardly from the matrix material 22 of the body of the fabric 23, say in accordance with Fig. 7, the non-crimped region 24 of the monofilament yarn shown therein and existing between mould parts 25 being of a length such as will form a loop 14 of a requisite size on folding of the monofilament about rod 15.
  • the encapsulation procedure is generally in accordance with the method of Figs. 1 to 5 and further description is thought unnecessary.
  • a premoulded seam element comprising an open, reticulate web member 26 having axially aligned tunnels 27 provided along a remote longitudinal edge 28 thereof is utilised, the web member 26 being applied to the pinned plate 13 for cooperation with those monofilament yarns 21 extending from the end of a composite fabric which are engaged therewith, the web member 26 and yarns 21 being encapsulated in matrix material 17 in analogous manner to the previous proposals.
  • the monofilament warp yarns 21 do not extend beyond the remote edge of the mould plate 13, and, as can be seen from the drawings, such warp yarns 21 may, if preferred, be interlaced with the web member 26, the interlacing serving to provide an improved load-bearing connection between the yarns 21 and web member 26 on encapsulation and the crimp resisting any tendency of the monofilament to be pulled from the matrix in the use condition of the fabric. It may be found sufficient, however, merely to arrange the yarns and seam element in relatively overlying disposition, rather than to effect interlacing therebetween.
  • an apertured hinge-like element which is positioned in register with the pinned mould plate, the hinge-like element being encapsulated in matrix material in analogous manner to the premoulded seam element of the embodiment shown in Figs. 8 and 9.
  • the web portion of the hinge-like element may be of multiplyconfiguration, the adjacent faces of successive plies being profiled to receive the warp yarns into engagement therewith and retention means being provided, if required, to clamp the plies together and thereby secure the yarns to the hinge-like element.
  • the position at which yarns are cut back, or indeed to which loop-forming yarns are folded-back, may be staggered in the yarn direction.
  • such material may be provided in liquid form or indeed as a sheet of such material which is brought into its liquid form by application of heat.
  • Other possibilities include the use of sheathed or encapsulated yarns of which the sheath or encapsulation material is capable of being brought into fluent form for fusion with that of adjacent yarns, whether of like form or otherwise.
  • end region of a fabric produced in accordance with the teaching of EP-A-0285376 is treated to remove the matrix material and thereby expose warpwise extending yarns which are brought into loop form in analogous manner to the method illustrated by, say, Figs. 6 and 7.
  • the matrix material may be selected from among the full spectrum of flexible polymeric compounds without regard to any yarn forming capacity thereof.
  • Typical materials are polyesters, such as polyethylene terephthalate, polyamides, for example nylon, polyethylene and polyurethane, the matrix material having a melting point lower than that of the yarn to be embedded therein.
  • silicone rubber may be useful as a matrix material.
  • thermosetting plastics materials resinous materials which are water-reactive, radiation curable resins, and reaction moulding compounds which polymerise almost immediately on being mixed together.
  • the primary application of the invention is in the context of papermakers fabrics and like industrial fabrics, such as those used in the board-making and asbestos cement sheet-making industries, although the invention may well be of application in other fields and the disclosure hereof is to be construed accordingly.

Landscapes

  • Treatment Of Fiber Materials (AREA)
  • Seal Device For Vehicle (AREA)
  • Paper (AREA)
  • Woven Fabrics (AREA)
  • Medicinal Preparation (AREA)
  • Materials For Medical Uses (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Organic Insulating Materials (AREA)
EP90304689A 1989-05-13 1990-04-30 Jointing of fabric ends Expired - Lifetime EP0399674B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898911033A GB8911033D0 (en) 1989-05-13 1989-05-13 Jointing of fabric ends
GB8911033 1989-05-13

Publications (3)

Publication Number Publication Date
EP0399674A2 EP0399674A2 (en) 1990-11-28
EP0399674A3 EP0399674A3 (en) 1991-08-21
EP0399674B1 true EP0399674B1 (en) 1996-01-24

Family

ID=10656705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90304689A Expired - Lifetime EP0399674B1 (en) 1989-05-13 1990-04-30 Jointing of fabric ends

Country Status (17)

Country Link
US (1) US5169570A (ja)
EP (1) EP0399674B1 (ja)
JP (1) JP2755786B2 (ja)
KR (1) KR900018459A (ja)
AT (1) ATE133460T1 (ja)
AU (1) AU624948B2 (ja)
BR (1) BR9002181A (ja)
CA (1) CA2016578C (ja)
CZ (1) CZ277771B6 (ja)
DE (1) DE69024998T2 (ja)
ES (1) ES2085331T3 (ja)
FI (1) FI92422C (ja)
GB (2) GB8911033D0 (ja)
IN (1) IN176671B (ja)
NO (1) NO176811C (ja)
NZ (1) NZ233534A (ja)
ZA (1) ZA903362B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0695827A2 (en) 1994-06-09 1996-02-07 Albany International Corp. Method of seam closure for sheet transfer and other paper processing belts
US6283165B1 (en) 1998-04-01 2001-09-04 Thomas Josef Heimbach Gesellschaft Mit Beschrankter Haftung & Co. Machine felt and process for its production

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5480604A (en) * 1991-01-23 1996-01-02 Asten, Inc. Molded seam for papermakers fabric and method
GB9107166D0 (en) * 1991-04-05 1991-05-22 Scapa Group Plc Papermachine clothing
GB9508573D0 (en) * 1995-04-27 1995-06-14 Scapa Group Plc Papermakers fabric seaming
GB9600052D0 (en) * 1996-01-03 1996-03-06 Scapa Group Plc Pintle wire
GB9622302D0 (en) * 1996-10-26 1996-12-18 Scapa Group Plc Expandable pintle wires
US5713399A (en) * 1997-02-07 1998-02-03 Albany International Corp. Ultrasonic seaming of abutting strips for paper machine clothing
US6183601B1 (en) 1999-02-03 2001-02-06 Kimberly-Clark Worldwide, Inc. Method of calendering a sheet material web carried by a fabric
DE20206659U1 (de) 2002-04-25 2003-06-12 Thomas Josef Heimbach Gesellschaft mit beschränkter Haftung & Co., 52353 Düren Papiermaschinenband
DE502004000919D1 (de) 2004-03-12 2006-08-17 Heimbach Gmbh & Co Papiermaschinenband
DE102004031213A1 (de) * 2004-06-28 2006-01-19 Voith Fabrics Patent Gmbh Verbinden von Verbundtextilstoffen
US7776187B2 (en) 2007-03-23 2010-08-17 Voith Patent Gmbh Belt having a non-linear seam and a method of on-machine joining of belt ends
US7513277B2 (en) * 2007-05-23 2009-04-07 Voith Patent Gmbh Low tensile creep belt
DE102009001887A1 (de) 2009-03-26 2010-09-30 Voith Patent Gmbh Verfahren zum Betreiben einer Papier-, Karton- oder Tissuemaschine sowie Papier-, Karton- oder Tissuemaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB623010A (en) * 1945-03-16 1949-05-11 Suzanne Berthe Mathieu Improvements in conveyor belts
US2907093A (en) * 1956-06-08 1959-10-06 Draper Brothers Company Method of making paper-maker's wet felt
US3323226A (en) * 1963-05-28 1967-06-06 Huyck Corp Synthetic dryer belt
US3301931A (en) * 1963-07-30 1967-01-31 Madeline F Mcgill Method of making looped snells
US3324991A (en) * 1965-08-18 1967-06-13 Voss Belting & Specialty Co Conveyor belts
US3546330A (en) * 1968-08-02 1970-12-08 Gulf & Western Ind Prod Co Method of making a tape splice
US4457817A (en) * 1975-05-12 1984-07-03 Forschungs Institut Fur Textiltechnologie Method of treating high-polymer materials
GB1529728A (en) * 1975-11-27 1978-10-25 Jwi Ltd Woven seam in fabric and method of making same
US4364421A (en) * 1977-08-30 1982-12-21 Wangner Systems Corporation Woven textile dryer fabric and seam and weaving method
US4470409A (en) * 1983-04-04 1984-09-11 Prusmack John P Medical device and method for reducing dislocated mandible

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0695827A2 (en) 1994-06-09 1996-02-07 Albany International Corp. Method of seam closure for sheet transfer and other paper processing belts
US6283165B1 (en) 1998-04-01 2001-09-04 Thomas Josef Heimbach Gesellschaft Mit Beschrankter Haftung & Co. Machine felt and process for its production

Also Published As

Publication number Publication date
CZ277771B6 (en) 1993-04-14
GB8911033D0 (en) 1989-06-28
CA2016578A1 (en) 1990-11-13
ATE133460T1 (de) 1996-02-15
DE69024998D1 (de) 1996-03-07
FI92422C (fi) 1994-11-10
ES2085331T3 (es) 1996-06-01
NO902110D0 (no) 1990-05-11
KR900018459A (ko) 1990-12-21
CS9002325A2 (en) 1991-10-15
IN176671B (ja) 1996-08-24
NO902110L (no) 1990-11-14
EP0399674A2 (en) 1990-11-28
NO176811B (no) 1995-02-20
EP0399674A3 (en) 1991-08-21
AU624948B2 (en) 1992-06-25
US5169570A (en) 1992-12-08
NZ233534A (en) 1992-09-25
CA2016578C (en) 1998-06-30
BR9002181A (pt) 1991-08-13
GB2231838B (en) 1993-03-03
DE69024998T2 (de) 1996-09-05
GB2231838A (en) 1990-11-28
ZA903362B (en) 1991-02-27
FI92422B (fi) 1994-07-29
GB9009656D0 (en) 1990-06-20
JP2755786B2 (ja) 1998-05-25
AU5489790A (en) 1990-11-15
FI902372A0 (fi) 1990-05-11
JPH0364592A (ja) 1991-03-19
NO176811C (no) 1995-05-31

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